Carbureter.



o. B. MONOSMITH. GARBURBTER. APPLICATION FILED JULY 7, 19,13.

151 1 0,45 3. Patented Sept. 15, 1914.

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CLNEZ IB. Ii/IONGSMTH, OF IJGRAN, OHIO.

C'ABBURETER.

Specification of Letters Patent.

Patented Sept. 15, 1914.

Application filed July 7, Serial No. 777,637.

' ferent speeds of the engine and economical in the use of gasolene.

.it is Well known that when gasolene is poured or allowed to drip upon a fiat .surface, it will quickly spread itself thereover by a sudden and start action into a very thin. film. This peculiar tendency of .io-

lene to cover a surface instantaneously in a ve y thin Iilin is used to advantage in .niy

presnt invention by permitting air to mix 'with said thin iilin of gasolene, and thereby supply the inost efficientand economical niixture of gas for the engine.

-l7l7ith the above and other objects in 'View as will -b'e understood, the invention will be hereinafter fully described in connection with the accoiiipanyii'ig drawings, which illustrate a preferred embodiment thereof, and the novel features will then be distinctly pointed out in the appended claiins.

ln the drawings like characters of reference indicate siniilar parts.

Figure 1 is a sectional elevation of a carburetor embodying my invention, Fig. 2 is a section taken on line 2-2 of Fig. 1, Fig. 3 is a side view of the gasolene ioiv box, Fig. {iillustrates the means for reducing the size of the perforations in the horizontal. plate of the ga solene flow box, and Fig. 5 is4 a plan vieiv of Fig.

Referring to the drawings, 1 represents an air passage arranged vertically, and preferably made square in cross section with av flange 2 at its upper end for connecting to the inlet of an internal-.combustion engine. The side of tdie air passage is provided with a rectangular opening 4., over which is arranged a gasolene flow box 5 preferably pyramidical in shape with one of its sides as 6 forming the bottom thereof. Said botf torn serves the purpose of a spray plateas will be hereinafter explained. The larger end of the box 5 is reinovably fixed to the side of the air passage as indicated at 7, and extending horizontally from the inner end of its inclined bottoni 6 is a spray plate or diaphragm 8, which is of the saine Width as the inside of the air passage for sliding therein. The inner end of the spray plate 8 is removably connected to the inside of the air passage by means of a bolt 9, Which passes through a lug 10 project-ing from said spray plate and also through the side 11 of the air passage. To the outer and smaller end of the gasolene liovv box 5 is attached a vertical tribe 12, preferably by forming a socket 13 integral with the sides Maud 15 of said box, which tube leads to a float chainber 16 of ordinary construction. The float chamber is supported from the side 15 of the gasolcne flow box, to which it is rigidly connected at 16a', in order to be renioiiable therewith. ln the upper'open end of the vertical tube 12 is rotatably mounted a valve 17 having a cut-away side 1S, for controlling the flow of gasolcne through the fuel opening 19 of said tube into the gasolene fioW box 5. An inclined battle-plate 20 is arranged across the upper portion of said box in front of the fuel opening 19. The gasolene 'issuing from said fuel openings drips upon the inclined spray plate G of said box under normal conditions, but at high speed of the engine on account of the increased pressure in the flow, the stream of gasolene first strikes againstthe baille-plate 20 and is deiiected thereby upon the inclined spray plate of the box. The valve 17 may be adjusted to give the piioper liow by turning its head 21, and the same is held in its set position' by means of a spring 22 fastened to the tube 12 with its free end bearing upon the collar 23 of the valve.

The inclined spray plate 6 of the gasolene flow boxk 5, beginning preferably a little distance from the fuel opening 19, is provided with a plurality of perforations 2i, and the horizontal spray plate S is also perforated as shown at 25. The perforations 24 and 25 are countersunk or made tapering from their upper ends, to give `a venturi action to the air currents entering at their smaller ends. rlhis action of the iiirushing air Will cause the thin Iilin of gasolene oir'the surface around the perforations to bedrawn into the air currents and mixed therewith. 1t will be noted that as the spray plate 6 is sie .in the air passage. This increases the flow 'ing through the perforations in the horizontal spray plate 8.

It is desirable to regulate the size of the perforations 25 in the spray 'pl-ate 8 to control the amount of air admitted, and especlally to reduce the area of the same upon s'tartlng the engine to lncrease. the vacuum of thegasolene from the fuel opening 19, and at the same time increases the spraying actioifof both the inclined and horizontal sprayplates. This is accomplished by means of a slide plate 26, which is arranged below the horizontal spray yplate 8 by passing through a transverse slot 27 in the side l1 of the air passage, and having its other end ,supported upon the lower edge '28 of the opening el in its opposite side 3. This slide plate is provided with perforations 29, correspondingly positioned as are those in the horizontal spray plate 8 in order to normally aline therewith, and the same size as the smaller ends of the countersunk perforations 25. It will be understood'that when. the slide plate 26 is moved inwardly, the perforations 25 will be correspondingly reduced' as illustrated in Figs. 4 and 5, or may be entirely closed.` Said slide plate is actuated by means of a vertical eccentric pin 30, which is rotatably mounted in the upper and lower horizontal arms of a bracket 31 removably fixed to the side 11 of tlie air passage by the before mentioned bolt 9. Said eccentric pin rests upon a reduced extension 32 of the slide plate 26, and depending from its lower end is an eccentric 33 which passes through a transverse slot 34 in said extension of the slide plate. A lever .35, for rotating the eccentric pin to move the slide plate longitudinally, is fixed to said pin adjacent the under side of the upper arm of the bracket 3l to retain the pin in the bracket. The lever 35 may be op erated from the dash-board of the vehicle in any suitable manner.

The inlet. of the air matially controlled by balanced `valve. spindle 36, which is pivoted in the sides 0f the air passage a little to one side of its vertical center and carrying wings 37 and passage 1 is automeans of a spring 3S of unequal lengths. For the purpose of assisting the shorter wing 37 to equally balance the longer wing 38, so that inrushing air'by exerting greater pressure upon the larger area of the wing 38 will swing the valve open, a helical spring 39 is fixed to the projecting end of the spindle 36 at 40 and also tol the outer side of the air passage at 4l. An ordinary butterfly valve 42 lnay be providedfor controlling the outlet of the air passage.

This valve consists of a The operation follows: When it is desired to start the engine, the slide plate 26 is moved to partially cover the perforation 25 and the valve 17 adjusted to give the proper flow of gasolene through 'the fuel opening 19. The gasolene flows onto the unperforated portion of the inclined spray plate 6 of the box 5, and instantaneously spreads itself in a very thin film over the surface of said spray plate and the horizontal spray vplate S. 'As air from the outside rushes through thcperforations 2st, it draws by suction said very thin film of gasolene around said perforations into the air currents, thereby vaporizing the gasolene and mixing' therewith to form 'an efficient mixture which flows into the air lpassage 1 and from the outlet thereof to the engine; The slide plate 2G is then actuated Ito uncover the perforations 25, and the nrush of air through the open end of the air passage will enter said perforations and very thin film of gasolen'e in the same manner as first described, thereby giving a most eflicient and economical mixture.

It will be understood, that minor changes in the details of construction may be made without departing from the principle of the invention and within the scope of the claims.

Having fully described my invention, what I claim is:

l. In a carburetor, the combination with an air passage of' a plate arranged transversely therein, the plate being` provided with pelforations, means for supplying a volatile fluid to a surface of' the plate, and means for uniformly controlling the area of said perforations in the plate, substantially as described.

2. In a carbureter, the combinationwith an air passage, of a plate arranged transversely therein, the plate being provided with perforations, the perforations having tapering sides and being larger at the opposite surface of the plate from. the direction of the air current-in said air passage to produce a venturi action, and means for supplying a volatile fluid to the surface of said plate having the larger areas of raid tapering perforations, substantially as described.

3. In a carl'iureter, the combination with a vertical air passage, of a plate arranged transversely therein, the plate being pro vided with perforations, the perforations the upper surface of the plate, means for supplying a volatile fluid to the upper sur-- face of said plate, and means for controllingr the area of said perforal substantially as described.

4. In a carbureter, .the combination with a vertical air passage, of a plate arranged ,transversely therein, the fnlate being provid ed with perforationathe pertoi'ations ha ving tapering sides and being larger at the having tapering sides and being larger at act upon the los ions in the plate,

l 'oratir'es li plying a labile fluid to the upper portion upper surface of the plate, means for supplying a volatile fluid to the upper surface of said plate, a slide plate below the first mentioned plate and in contact therewith, the slide plate being perforated to normally aline with the pertorations in the rst inentioned plate,'and means for actuating the slide plate to control the area of the perforatiousinthe tirst mentioned plate, substantially as described.

5. :ln a carbureter, the Combination with an air passage, ot' a box projecting laterally therefrom and communicating therewith, one side 'ot the box being provided w ith perfo-rations, and means tor supplying the inner surface ot the perforated side of the box with a volatile tluid, substantially as described.

7. ln a carburetor, the combination With a vertical air passage, of a box projecting from theoside oli the air passage and communicating therewith, the box having an inclined bottom, the bottom of the box being provided with pertorations, the perforations having tapering sides and being' larger at the inner surface of the bottom, a vertical ppe fixed to said box at its outer end and having a lateral opening for supplying a volatile iluid to the upper portion of the inner surface ot said box, and an adjustable valve for controlling the liow ot the volatile tluid upon said bottom, substantially as described.

S. ln a carburetor, the combination with a vert-ical air passage, the side of' the air passage and communieating therewith, the box having an inclined bottom, the bottom of the box `being proiidcd with perforations, a plate extending .trom the bottom ot the box and across said aii passage, the plate being pertorated, and m vans i'c-r supplying a volatile fluid to the uppir portier.. ot the bottom ot said box, substantially as described.

l Yi a carbureter, the combination with a vertical air passage, of a box arranged at the sidi` ot the. air passage and communieating therewith, the box havingan inclined bottom, 'he boitom ot the box being provided wi'h periorations, a plate extending from the bottom of the box and across said air pas, ige, the plate being perforated, mean-for controlling the area of the persaid plate, and means tor supof a box arranged at` of the bottom of said box, substantially as described.

, l0. In a carhureter, the combination .with a vertical air passage, ot a box arranged at the side oi' the air passage and communi- -ating therewith, the box having an inclined bottom, the bottom oi the box being provided with perforations, a plate extendrf from the bottom ot the box and aero air passage, the plate being perforated, means for controlling the area ot the perforations in said plate, an automatic valve ior controlling the inlet of the air passage, a valve at. the outlet of the air passL Ce, and means tor `supplying a volatile iuid to the upper portion of the bottom of said box, substantially as described.

ll. In a carburetor, the combination with a vertical .air passage, ot a bex arranged at the side ot the air passage and communieating therewith, the box having an inclined bot-tom, the bottom oit' the box being provided with pertorations, a plate extending from the bottom ot the box and across said air passage, the plate being perforated a butter-ily valve eccentrically pivoted in the inlet end ot the air passage and having one wing longer than its other, a spring Jr'or balancing the valve, and means tor supplying a volatile fluid to the upper-portion of the bottom of said box, vsubstantially as described@A c 12. in a. earbureter, the combination with a vertical air passage having an opening in one side, et' a box arranged to cover the opening and being removably fixed to the air passage, the box being pyramidical in cross 'section with one ot its sides forming a. spray plate, the spray plate oli the box being provided with pci-terations`I a spray plate extending trom the spray plate' ol the box and across said air pafsage, the second mentioned spray plate being perforated, a float chamber supported by said box, and a tube leading from the Float chamber to supply a volatile fluid to the inner sui-tace ot' the spray plate of box, substantially as described. i

13. In a carburetor, the a vertical air passage, ot a plate arranged transversely therein, the plate being provided with pertorations, means tor supplying a volatile fluid to the upper sui-'tace ot said plate, a slide plate below the first mentioned plate and in Contact therewith, the slide plate being perforated to normally aline with the pertorations in the lirst nientioned plate, a bracket supported by the air passage, an eccentric pin pivoted in the bracket, said slide plate being provided with a transverse slot tor receiving the eccentric pin, and means for rotating the eccentric pin to cause movment ot the slide plate, substantially as d scribed.

let. ln a carburlter, the combination with combination with a 4vertical air passage, of a plate arranged transversely therein, the plate being provided with perforatio s means for supply` ing a volatile luid to the upper surface of said plate, a slide plate below the rst mentioned late and in. contact therewith, the slide piiite `being perforated to normally aline with the perforations in the first mentioned plate, a portion of the slide plate projecting througha wall of the air passage, la bracket supported on the outside of the air .passage adjacent the projecting portionof the slide' plate, an eccentric pin pivotedin the bracket, the projecting portion of said slide plate being provided with a transverse slot for receiving the eccentric pin, and

' means for rotating the eccentric pin to cause movement of the sllde plate, substantiallyA as described.

l5. In a Carbureter, the combination with a vertical air passage, of al box projecting from the side of the air passageand communicating therewith, the clined bottom, the bottom of the box being provided with perforations, the perforations in the bottom having tapering sides and being larger at the inner surface of the bottom, a plate extending from the bottom of the boX and across said air passage, the plate being perforated, the perforation in said plate having tapering sides and being larger at the upper surface of the plate, and means for supplying a volatile Huid to the upper portion of the bottom of said box,

f substantially as described.

In testimony whereof I aiix 1n presence of two witnesses.

oLNEY B. MoNosMITH: lVitnesses `A N. P. WHELAN, W. H. KELsEY.

my signature box having an in- 

